Does any of the linux clipboard managers have the feature paste all?
A simple scenario:
1. Copy first piece of text.
2. Copy second piece of text.
3. Copy n-th piece of text.
4. Command the clipboard manager to paste all of the copied text pieces.

The same ability for images or a combination of text and images would be useful as well but let's simplify to text only case.
I tried few of the recommended applications and haven't found this in neither of them.